Partial cubes: structures, characterizations, and constructions

Details Partial cubes: structures, characterizations, and constructions Partial cubes: structures, characterizations, and constructions

2007-03-31

arxiv.org/abs/0704.0010v1

Mathematics

Combinatorics

36 pages, 17 figures

Scientific paper

Partial cubes are isometric subgraphs of hypercubes. Structures on a graph defined by means of semicubes, and Djokovi\'{c}'s and Winkler's relations play an important role in the theory of partial cubes. These structures are employed in the paper to characterize bipartite graphs and partial cubes of arbitrary dimension. New characterizations are established and new proofs of some known results are given. The operations of Cartesian product and pasting, and expansion and contraction processes are utilized in the paper to construct new partial cubes from old ones. In particular, the isometric and lattice dimensions of finite partial cubes obtained by means of these operations are calculated.

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